A department employee talking to an individual on the telephone

The department's Public Drinking Water Branch is responsible for ensuring Missouri's public water systems provide safe drinking water to every resident and visitor in the state. To do this, the branch issues permits to ensure new and existing public water systems understand and comply with all applicable provisions of federal and state environmental laws and regulations. 

The branch provides guidance and technical assistance to public water systems to help them stay in compliance with drinking water regulations, improve water quality and manage their infrastructure. The branch also provides guidance for improving their water system, assistance with funding for upgrades and training for operators. Do you need some business guidance or technical assistance? The department offers compliance assistance visits, permit guidance, disaster resources, grant assistance and much more. 

Disinfection

Chlorine Monitoring

Chlorine conversion in routine public drinking water system maintenance

For more information, contact your local department regional office.

Lead

General Information

For Public Water Systems

Community Water Systems: A public water system that supplies water to the same population year-round. 

Nontransient Noncommunity Water Supplies: A public water system that regularly supplies water to at least 25 of the same people at least six months per year. Some examples are schools, factories, office buildings and hospitals which have their own water systems.

Customer Notification of Lead and Copper Results

Documents Included in Sample Kit

Lead and Copper Information for New Water Systems

Lead Public Education Documents

Routine Lead and Copper Monitoring Documents

Forms and Other